Help Identifying My Particular Quad 405

Archived from groups: rec.audio.tech (More info?)

On 22 Sep 2005 22:13:54 -0700, "kafer77" <kafer77@ameritech.net> wrote:

>There are
>some inconsistencies with this unit that have me confused

..:-(

>Unit Serial # 37277
>Board #'s M12368 ISS9

According to Quad's tech manual, M12368 ISS9 was used for S/N 9000 to 29000
and M12368 ISS10 up to S/N 59000. Your unit should have been fitted with
ISS10.

>So, for you folks familar with the Quad 405, is this a US imported amp
>OR an amp imported to say the French speaking area of Canada?

Amps sold in France were the same as UK/International versions, save for the
user manual and mains lead.

> Second,
>why are there 2 additional power supply fuses mounted on the inside of
>the back panel? I have not seen this arangement in internal photos
>I've ever seen before.

Never seen that too. Maybe a user mod?

Archived from groups: rec.audio.tech (More info?)

"kafer77" <kafer77@ameritech.net> wrote in message
news:1127793517.336636.70010@g44g2000cwa.googlegroups.com...
I hear you François; however, the fact remains that there is NO
voltage selector on the rear panel - simply a blank, unused area of
sheet metal! The only thing there is the screw head I mentioned and
the 2 internal fuses mounted - quite professionally (at the factory??)
- on a bracket secured to the inside face of the rear panel.

Not what I have seen before!

Sure it's not a home-made clone ? A group of us at my work even went to
the extent of casting heatsinks ! (We had a foundry in our organisation ...)
and producing PCBs.

geoff

You have a series 1 Quad 405 , the circuit board went
through a number of revisions , info about each revision
is in the technical service data .. contact Quad and request
service data.

Re blank plate this is unusual. If there is no voltage selection
it would indicate the internal wiring is set for one voltage alone
and reference to the service data will inform the voltage
the transformer is wired for. An inspection of the internal
amplifier - with power off ** should reveal what wiring is
present. ** Don't open case with power cord connected.

The alternatives I know of with 405's are a model serving
the LS/8 Rogers loudspeaker which had crossover components
and XLR plugs. There was also a monoblock amp which
Quad sold a conversion kit for as well.

An email to Quad info@quad-hifi.co.uk might better answer
your question, post back here so we all find out.... Lara